Essays Tagged: "Blood vessel"

tissues covering the brain, the attaching structures at the base of the brain, and the muscles and blood vessels around the scalp, face and neck. There are two types of headaches primary and secondar ... rovascular headaches are the second most common primary. They are caused by the interaction between blood vessel and nerve abnormalities. (Migraines and cluster headaches fall under this category.)Sec ...

ses--such as heart attack, stroke, angina pectoris, arteriosclerosis and arteriosclerosis, and high blood pressure--and their risk factors are so interrelated that it is very difficult to say "where i ... aks grow larger and start hardening into plaque.The danger is that plaque can lead to aneurysms and blood clots, and clots in turn can result in thrombosis, heart attack, and stroke.An aneurysm occurs ...

alfunction of other organs. The condition has to do with extensive pulmonary inflammation and small blood vessel injury in affected organs. ARDS is the result from widespread acute injury to the alveo ... rachea, air flows through tubes called bronchi into microscopic air sacs called alveoli. Very small blood vessels (capillaries) are imbedded in the walls of these air sacs. Oxygen passes through the t ...

olving Disturbances of Haemostasis.Normal Human Haemostatic MechanismsHaemostasis is the control of blood loss from the circulation, involving a number of separate events including coagulation.The pro ... ation.The process is as follows:1. Vasoconstriction (Vasospasm).When the initial injury occurs to a blood vessel, it constricts with enough intensity to close the vessel. It occurs as the result of 2 ...

What are the different ways, physiological and pharmacological, inwhich blood vessel diameter can be modified?Detection of changes in blood pressure (leading to resultant c ... cation of internal and external carotid arteries in the neck) and the aortic arch detect changes in blood pressure. These non-encapsulated nerve endings, located in the adventitial layer of arteries, ... are technically mechanoreceptors; they respond to arterial distension occurring due to a change in blood pressure. Afferents from the carotid region form the fine carotid sinus nerve which ascends in ...

A stroke is a very serious illness that can lead to death. A stroke or brain attack occurs when a blood clot blocks a blood vessel or artery, or when a blood vessel breaks, interrupting blood flow t ... however, you can greatly reduce your chances of getting a stroke.It is very important to know your blood pressure. It should be checked at least annually. If it is elevated, it is important to work w ...

e blockages (atheromas), which occur due to the build up of fatty deposits in the arteries carrying blood to the heart muscle, the process is called atherosclerosis. Or thrombosis, which develops if a ... atherosclerosis. Or thrombosis, which develops if an atheroma, goes through the endothelium of the blood vessel and forms a rough surface that enables the blood to flow steadily through the vessels. ...

the dilation, bulging, or ballooning from the wall of the aorta, which is the artery through which blood flows out of the heart to the body. Aneurysms can develop wherever atherosclerosis, or hardeni ... zman, Procedures, Medtronic). An aneurysm can also stem from use of tobacco, high cholesterol, high blood pressure, diabetes, and emphysema, which is an abnormal distention of body tissues caused by r ...

Cerebrovascular disease, a "stroke" or "brain attack", occurs when the blood supply to a part of your brain is blocked or severely reduced, by a blood vessel breaking or a ... e from strokes than 20 or 30 years ago. People controlling major risk factors such as smoking, high blood pressure, and high cholesterol are more likely the reason for the decline. 80% of strokes are ... e two types of stroke (or CVA or "brain attack"): an ischemic stroke, which is caused by too little blood in the brain, and a hemorrhagic stroke, caused by too much blood within the brain cavity. Abou ...

nction of other organs. The condition is associated with extensive pulmonary inflammation and small blood vessel injury in all affected organs. ARDS has a fatality rate of approximately 50 despite sup ... edical emergency. It may be caused by a variety of conditions that directly or indirectly cause the blood vessels to "leak" fluid into the lungs. The ability of the lungs to expand is severely decreas ...

an and Kauffman, 130).The majority of individuals with Williams syndrome have some type of heart or blood vessel problem. There is narrowing in the aorta, or narrowing in the pulmonary arteries. The d ... ing in the pulmonary arteries. The degree of narrowing differs from trivial to severe. Risk of high blood pressure is increased meaning, over time monitoring cardiac status is necessary. (WSA) Symptom ...

e major subtypes: Sarcomas - from connective and supportive tissue, such as bone, cartilage, nerve, blood vessel, muscle, and fat.Carcinomas, - include the most frequently occurring forms of human can ... esemble glandular tissue are called adenocarcinomas.Leukemia's and lymphomas - cancers that involve blood-forming tissue and are typed by the enlargement of the lymph nodes, the invasion of the spleen ...

Two of the three other culprits are homocysteine and C-reactive proteins, they are thought to scar blood-vessel linings which leads to the further development of plaque. There is evidence of inflamma ...

are tight feeling in the chest, nausea, and shortness of breath. It also could be a disease of the blood vessel of the heart that could cause sudden death or even a heart attack. That could be cure b ... could cause sudden death or even a heart attack. That could be cure by angiplasty or opening of the blood vessel with a balloon. The doctor informed the patient that some blood tests were going to be ...

t invasive. The retina scan involves a beam of light that allows the computer scanner to access the blood vessel pattern on the back of the eye, which provides a unique base for identification. It req ...

ging (MRI) scan. By using an MRI, the staff was able to see that the patient in fact, had a blocked blood vessel in his lower leg from a blood clot. The therapy that the nursing staff had requested fo ...

any race, sex, or age. The Physical and Mental Issues in Aging Sourcebook defines a stroke as "when blood circulation to the brain fails." (Swanson 101). Without blood, the brain cannot function, so w ... son 101). Without blood, the brain cannot function, so when a stroke takes place, a clot blocks the blood flow to the brain causing the problem. A stroke can happen in the right or left hemisphere of ...

. The binding of adenosine causes drowsiness by slowing down nerve cell activity while also causing blood vessels to dilate, letting more oxygen in during sleep.Now, the common effects of caffeine in ... ceptors bind to caffeine instead of adenosine, and thus the nerve cell's activity speeds up and the blood vessel shrivels in the brain.As the adenosine receptors are blocked by caffeine instead of ade ...

ce. While blowing the horn with over whelming force, signaling the French troops, Roland ruptured a blood vessel in his brain. Even though his sense of honor and bravery are admirable, the consequence ...